Overtime Tax Calculator

Most states follow the federal FLSA rule (OT after 40 hours/week). These states have additional requirements:

Understanding Overtime Pay Taxation

Under the Fair Labor Standards Act (FLSA), non-exempt employees must receive overtime pay of at least 1.5 times their regular rate for hours worked beyond 40 in a workweek. This is commonly called "time and a half."

Supplemental Wage Withholding

The IRS classifies overtime pay as supplemental wages. Employers can use the flat 22% withholding method or the aggregate method. Most payroll systems use the flat 22% rate, which often results in more tax being withheld than what you actually owe, especially for lower-bracket workers.

Why Your Paycheck Seems Smaller

When you see your OT paycheck, the withholding at 22% can feel like a penalty. If your marginal tax bracket is only 12%, you are being over-withheld by 10 percentage points on every OT dollar. This excess comes back as a larger tax refund. You are not actually losing money on overtime work.

FICA on Overtime

Overtime pay is always subject to FICA taxes: 6.2% Social Security (up to the wage base of $176,100 in 2025) and 1.45% Medicare. The Additional Medicare Tax of 0.9% applies to wages over $200,000 for single filers. Unlike federal income tax, FICA rates are flat and apply to every dollar of OT.

Overtime prevalence and earnings vary significantly across industries. Here is how OT impacts workers in the highest-overtime sectors of the US economy.

Not all workers are entitled to overtime pay. The FLSA establishes both "exempt" and "non-exempt" employee categories. Understanding your classification is essential before calculating overtime tax.

Non-Exempt Employees (Eligible for OT)

Hourly workers and salaried workers earning below the FLSA salary threshold are generally entitled to overtime. The 2025 salary threshold is $58,656 per year ($1,128/week). If you earn below this and perform non-exempt duties, you must receive 1.5x pay for hours over 40 per week.

Exempt Employees (Not Eligible for OT)

Employees who meet both the salary threshold and perform specific job duties may be classified as exempt. The main exemption categories are:

Strategic timing of overtime and deductions throughout the year can meaningfully impact your tax liability. Here is a quarter-by-quarter guide for workers who regularly earn overtime.

Q1 January - March

Set your W-4 at the start of the year based on expected OT income. If you plan heavy OT, increase 401(k) contributions now so the deduction spreads across the full year. Review last year's tax return to see if OT caused over or under-withholding. January HSA contributions to start tax-advantaged investing early.

Q2 April - June

After filing your tax return, assess whether you received a large refund from OT over-withholding. If so, adjust your W-4 to keep more money in each paycheck rather than giving the IRS an interest-free loan. Track cumulative OT earnings against your projected annual bracket. Mid-year is a good checkpoint to adjust retirement contribution percentages.

Q3 July - September

Check your Social Security wage base progress. If base salary plus OT is approaching $176,100, your remaining OT will no longer incur the 6.2% SS tax, effectively lowering your OT tax rate by 6.2 percentage points. This is a good time to take on additional OT if available, as the effective rate is lower.

Q4 October - December

Final push on tax. If you have had significant OT, consider maxing out your 401(k) contribution limit ($23,500 for 2025, $31,000 if age 50+). Make charitable contributions or prepay deductible expenses to offset OT income. If applicable, make estimated tax payments by January 15 to avoid underpayment penalties. Plan holiday/year-end OT with tax implications in mind.

Fair Labor Standards Act (FLSA)

The FLSA is the primary federal law governing overtime pay. Enacted in 1938, it established the 40-hour workweek and the requirement for 1.5x overtime pay. The law covers most private sector workers and federal, state, and local government employees. It does not limit how many hours an employee may work in a week, only requires that overtime is compensated at the premium rate.

Employer Obligations

Employers must accurately track hours worked for all non-exempt employees. They must pay overtime at 1.5x the "regular rate of pay," which includes not just the hourly wage but also shift differentials, non-discretionary bonuses, and piece-rate earnings averaged over the workweek. Failure to include these in the regular rate is a common overtime violation.

Common Overtime Violations

Watch for these red flags that may indicate your employer is not paying overtime correctly:

One of the most debated career questions: is it better to be an hourly worker earning overtime, or a salaried employee with a fixed income? The answer depends on your specific numbers.

Case Study $25/hr Worker with 10 OT Hours/Week

Independent contractors and gig workers (Uber, DoorDash, freelancers) generally do not receive overtime pay because they are classified as self-employed. Understanding how extra income is taxed is still crucial.

Self-Employment Tax on Extra Hours

Gig workers pay self-employment tax of 15.3% (double the employee FICA rate) on all net earnings, plus federal and state income tax. There is no supplemental withholding rate because gig platforms do not withhold income tax. This means gig workers must make quarterly estimated payments to avoid penalties.

Comparing Extra Hour Earnings

Gig workers can offset higher self-employment tax through business deductions that W-2 employees cannot claim. Track mileage ($0.70/mile in 2025), phone expenses, supplies, and home office costs to reduce taxable income from extra work hours.

The supplemental wage withholding rate and federal tax brackets have changed significantly over the decades. Understanding the history provides context for current rates and potential future changes.

Overtime use and earnings vary significantly by state due to differences in industry mix, cost of living, and state labor laws. Here is how the top states compare for workers who regularly earn overtime.

Lenders view overtime income differently when evaluating mortgage, auto loan, and credit applications. Understanding how OT is counted can help you prepare documentation and set expectations.

Mortgage Lenders

Most mortgage lenders will count overtime income if you can document a consistent 2-year history of OT earnings. They typically average your OT over 24 months. If your OT is declining year-over-year, some lenders may reduce or exclude it. Provide your last 2 years of W-2s and recent pay stubs showing year-to-date OT earnings. FHA and conventional loans both recognize OT income when properly documented.

Auto Loans and Personal Credit

Auto lenders are generally more flexible. Many count current OT shown on recent pay stubs without requiring a 2-year history. The total income including OT must support the debt-to-income ratio requirements. For credit card applications, you can typically include OT in your reported annual income.

Documentation Checklist

To the impact of OT income on credit applications, prepare: last 2 years of W-2 forms, most recent 30 days of pay stubs, an employer letter confirming overtime availability is ongoing, and a year-to-date earnings statement from your payroll system. Some lenders may also request a verification of employment (VOE) that specifically confirms OT history.

Overtime income can affect your eligibility for certain tax credits and subsidies. Being aware of these thresholds helps you plan your OT hours strategically.

ACA Premium Tax Credits

If you purchase health insurance through the Marketplace (healthcare.gov), your premium tax credits are based on your Modified Adjusted Gross Income (MAGI). Significant overtime can push your income above the threshold where credits phase out, potentially costing you thousands in subsidies. For 2025, credits are available up to 400% of the Federal Poverty Level, though the cliff has been softened by recent legislation.

Child Tax Credit and EITC

The Earned Income Tax Credit (EITC) phases out at higher income levels. For a single filer with one qualifying child, the EITC begins phasing out at $20,600 and is fully phased out at $49,084 (2025). Overtime income that pushes you past these thresholds can reduce or eliminate this credit, which is worth up to $4,213. Similarly, the Child Tax Credit begins phasing out at $200,000 for single filers and $400,000 for married filing jointly.

Income-Based Student Loan Repayment

If you are on an income-driven repayment plan (IBR, PAYE, SAVE), overtime income increases your AGI, which can increase your monthly student loan payment. Each additional $1,000 of annual OT income could increase your monthly payment by approximately $8-10 on most IDR plans. Consider this cost when evaluating whether additional overtime is worth the trade-off.

Overtime earnings can significantly accelerate your retirement savings if managed correctly. Here is how to make your extra hours work harder for your future.

Directing OT Income to Retirement

If you increase your 401(k) contribution percentage during high-OT periods, you shelter more income from taxes while building retirement wealth. For example, if you earn $375/week in overtime, contributing 15% of total pay to a traditional 401(k) shelters approximately $56.25 per week of OT from current income tax.

Compound Growth of OT Savings

A worker who saves $500/month from overtime in a tax-advantaged retirement account for 25 years at a 7% average annual return would accumulate approximately $405,000. That same money kept in a taxable account would yield roughly $310,000 after capital gains tax, demonstrating the power of tax-sheltered OT savings.

For workers with child support obligations, overtime income can have significant implications. State laws vary on whether overtime pay is included in child support calculations.

States That Include OT in Child Support

Most states include all sources of income, including regular overtime, in the child support calculation. Courts distinguish between "regular" and "voluntary" overtime. If overtime is a consistent part of your employment (documented over 2+ years), it will likely be included. If overtime is sporadic or voluntary, courts may exclude it. Key states that routinely include overtime: California, New York, Texas, Florida, Illinois, and Ohio.

Impact on Child Support Amounts

Child support percentages vary by state and number of children. These estimates assume a single-child scenario with typical state guidelines. Some states use a flat percentage model (e.g., 17% for one child in Texas), while others use an income-shares model that considers both parents' earnings. Consult a family law attorney in your state for precise calculations.

Learning to read your pay stub correctly helps you verify overtime calculations and tax withholding. Here is what each overtime-related line item means.

There have been several legislative proposals in recent years to change how overtime income is taxed. Here is a summary of the most significant proposals and their potential impact on workers.

No Tax on Overtime Proposals

Multiple bills have been introduced in Congress proposing to exempt overtime pay from federal income tax entirely. If enacted, this would allow workers to keep the full gross amount of their overtime earnings (minus FICA and state taxes). For a worker earning $20,000/year in overtime at the 22% bracket, this would mean approximately $4,400 in additional take-home pay annually.

Potential Impact

Critics of these proposals argue they would reduce federal revenue by an estimated $680 billion over 10 years, primarily benefit higher-earning overtime workers, and create incentives for employers to restructure compensation as "overtime" rather than base pay. Supporters counter that it would directly reward workers who put in extra hours and stimulate economic activity through increased consumer spending.

TCJA Expiration and Future Rates

Regardless of standalone overtime proposals, the potential expiration of Tax Cuts and Jobs Act provisions after 2025 could increase the supplemental withholding rate from 22% to 25% and raise individual tax brackets. Workers who earn significant overtime should monitor these developments closely and plan.

Some employers offer alternatives to traditional overtime compensation. Understanding the legal and financial implications helps you make informed decisions about your time and earnings.

Compensatory Time (Comp Time)

Comp time allows employees to take paid time off instead of receiving overtime pay. Under federal law (FLSA), only public sector employees can legally receive comp time in lieu of overtime pay. Private sector employers cannot offer comp time instead of OT pay, though some do so illegally. If your private employer offers comp time instead of paying overtime, this is a wage violation. Comp time must be provided at the same 1.5x rate (1.5 hours of time off per 1 hour of OT worked).

Flex Time and Alternative Work Schedules

Some employers use compressed workweeks (e.g. Four 10-hour days) or flexible scheduling. Under federal law, these arrangements do not change the 40-hour weekly overtime threshold. In states with daily overtime rules (like California), a compressed schedule may trigger daily OT even if weekly hours are under 40. California has a specific "Alternative Workweek Schedule" provision that allows employers to implement 4/10 schedules without triggering daily OT, but it requires a 2/3 employee vote.

Financial Comparison

Many workers consider whether overtime at their primary job or a second part-time job is more financially rewarding. The tax treatment differs significantly between the two options.

Overtime at Primary Job

Overtime pays 1.5x your regular hourly rate. Federal taxes are withheld at 22% (supplemental rate) or via the aggregate method. FICA is calculated on combined regular plus OT wages. All earnings flow through a single W-2, simplifying tax filing. Your employer handles all withholding and reporting. The effective tax rate on OT depends on your marginal bracket and may result in a refund if over-withheld.

Second Part-Time Job (W-2)

Second-job income is paid at the regular rate (no 1.5x premium). The second employer typically withholds based on that job's income alone, which means under-withholding is common. You may owe a balance at tax time because the second employer withholds at lower brackets, not knowing about your primary income. To avoid surprises, submit a W-4 to your second employer requesting additional withholding or claiming "0" allowances.

Side Comparison

Workers' compensation benefits and overtime earnings interact in important ways that every overtime-earning employee should understand.

How OT Affects Workers' Comp Premiums

Employers pay workers' compensation premiums based on total payroll, including overtime pay. Most states require that only the straight-time portion of overtime is included in the premium calculation. The overtime premium (the extra 0.5x) is typically excluded. For example, if a worker earns $37.50/hr for OT (1.5x of $25), the workers' comp premium is based on $25/hr for those OT hours, not $37.50.

Workers' Comp Benefits and Lost OT Income

If you are injured on the job and regularly earn overtime, your workers' compensation benefits should reflect your OT earnings. Most states calculate temporary disability benefits based on your Average Weekly Wage (AWW), which includes overtime pay from the 12-52 weeks before your injury. Failing to include OT in your AWW is a common dispute. Keep your pay stubs as documentation.

Key Points by State

Key terms and definitions related to overtime pay and taxation that every worker should know.

These official resources can help you verify overtime calculations, understand your rights, and your tax situation.

All links lead to official US government websites. Tax law is complex and subject to change. While this calculator provides reliable estimates, individual circumstances vary. Consider working with a CPA or enrolled agent if your overtime income is significant or your tax situation is complex.